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A novel type of hierarchical nanocomposites consisted of MoS2 nanosheet coating on the self‐ordered TiO2 nanotube arrays is successfully prepared by a facile combination of anodization and hydrothermal methods. The MoS2 nanosheets are uniformly decorated on the tube top surface and the intertubular voids with film appearance changing from brown to black color. Anatase TiO2 nanotube arrays (NTAs) with...
Theranostic nanomedicines that integrate diagnostic and therapeutic moieties into a single nanoscale platform are playing an increasingly important role in fighting cancer. Here, a facile and green synthetic strategy for hollow CoPt alloy nanoparticles (HCPA‐NPs) using plant polyphenols as assisted agents is reported for the first time. This novel strategy enables size‐controlled synthesis of HCPA‐NPs...
In this paper, an embedded fin‐like metal‐coated carbon nanotube (Fin‐M/CNT) structure is demonstrated for flexible and transparent conductor wire applications. Embedded in a polydimethylsiloxane polymeric substrate, Fin‐M/CNT wires with a minimum width of 5 μm and a minimum pitch of 10 μm have been achieved. Direct current resistances of single Fin‐M/CNT wires, where the supporting CNT structures...
Sn4+–O2−• centers are intentionally created in SnO2 nanoflowers by a thermodynamically instable synthetic process. The resulting SnO2 nanoflower‐based sensor is confirmed to be the most sensitive ppb‐level chemiresistor NO2 sensor to date. The Sn4+–O2−• centers with strong gas‐adsorbing and high eletron‐donating capability towards NO2 molecules decisively determine the sensor sensitivity.
Heterostructured TiO2 nanorod@nanobowl (NR@NB) arrays consisting of rutile TiO2 nanorods grown on the inner surface of arrayed anatase TiO2 nanobowls are designed and fabricated as a new type of photoanodes for photoelectrochemical (PEC) water splitting. The unique heterostructures with a hierarchical architecture are readily fabricated by interfacial nanosphere lithography followed by hydrothermal...
Methods for patterning biomolecules on a substrate at the single molecule level have been studied as a route to sensors with single‐molecular sensitivity or as a way to probe biological phenomena at the single‐molecule level. However, the arrangement and orientation of single biomolecules on substrates has been less investigated. Here, the arrangement and orientation of two rod‐like coiled‐coil proteins,...
A kinetic, single‐cell proteomic study of chemically induced carcinogenesis is interpreted by treating the single‐cell data as fluctuations of an open system transitioning between different steady states. In analogy to a first‐order transition, phase coexistence and the loss of degrees of freedom are observed. The transition is detected well before the appearance of the traditional biomarker of the...
Molybdenum disulfide (MoS2) and tungsten disulfide (WS2), two representative transition metal dichalcogenide materials, have captured tremendous interest for their unique electronic, optical, and chemical properties. Compared with MoS2 and WS2, molybdenum ditelluride (MoTe2) and tungsten ditelluride (WTe2) possess similar lattice structures while having smaller bandgaps (less than 1 eV), which is...
Protein molecules are aligned and immobilized from solution by AC electric fields. In a single‐step experiment, the enhanced green fluorescent proteins are immobilized on the surface as well as at the edges of planar nanoelectrodes. Alignment is found to follow the molecules' geometrical shape with their longitudinal axes parallel to the electric field. Simultaneous dielectrophoretic attraction and...
Chemically functional core/shell microtubes made of biodegradable polymers are fabricated using coaxial electrospinning. The luminal walls are chemically functionalized, allowing for regioselective chemical binding or adsorption inside the microtube. Attaching catalytic nanoparticles or enzymes to the luminal walls converts the microtubes into bubble‐propelled microrockets. Upon exposure to ultrasound,...
The direct growth of single‐layer graphene patterns via electron irradiation of aromatic self‐assembled monolayers and subsequent annealing is demonstrated. In this way, a reduction in the number of necessary manufacturing steps is achieved. The formed micro‐ and nanostructures can be arbitrarily shaped and eventually implemented in a manifold of applications.
Scaffolds functionalized with delivery systems for the release of growth factors is a robust strategy to enhance tissue regeneration. However, after implantation, macrophages infiltrate the scaffold, eventually initiating the degradation and clearance of the delivery systems. Herein, it is hypothesized that fully embedding the poly(d,l‐lactide‐co‐glycolide acid) microspheres (MS) in a highly structured...
A high‐sensitivity and low‐power theranostic nanosystem that combines with synergistic photothermal therapy and surface‐enhanced Raman scattering (SERS) mapping is constructed by mesoporous silica self‐assembly on the reduced graphene oxide (rGO) nanosheets with nanogap‐aligned gold nanoparticles (AuNPs) encapsulated and arranged inside the nanochannels of the mesoporous silica layer. Rhodamine 6G...
Graphene has been regarded as a promising candidate for a new generation of transparent electrodes (TEs) due to its prominent characteristics including high optical transmittance, exceptional electronic transport, outstanding mechanical strength, and environmental stability. Comprehensive and critical insights into the latest advances in graphene‐based TEs (GTEs) since, but not limited to 2013, are...
Effective insertion of nanowires into cells is critical for monitoring subcellular activities, bio‐electrical devices, and photosynthetic bio‐energy harvesting. On page 1446, W. Ryu, J. Moon and co‐workers demonstrate the possibility of direct insertion of nanowires into living algal cells using inkjet printing technology. While most cell printing technologies aim to print cells on a flat substrate,...
Avoiding the clearance of drug delivery systems from 3D scaffolds is crucial to preserve the bioactivity of their therapeutic payload. This is accomplished on page 1479, by E. Tasciotti and co‐workers, through a “concealing” strategy: cloaking PLGA microspheres with the type I collagen matrix of a biomimetic scaffold, which enables the control of the production of inflammatory mediators.
Effective insertion of vertically aligned nanowires (NWs) into cells is critical for bioelectrical and biochemical devices, biological delivery systems, and photosynthetic bioenergy harvesting. However, accurate insertion of NWs into living cells using scalable processes has not yet been achieved. Here, NWs are inserted into living Chlamydomonas reinhardtii cells (Chlamy cells) via inkjet printing...
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